Open-air gas-burner.



OPEN AIR GAS BURNER. urmoumzr FILED my a. 1904.

UNITED STATES CHARLES A. HARVEY, OF CHICAGO. ILLINOIS, ASSIGNOR TO ACME OAS- Patented May 23, 1905.

PATENT OFFICE.

COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

OPEN-AIR GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 790,365, dated May 23, 1905.

Application'filed May 9, 1904. Serial No. 207,046.

To all whom it may concern:

Be it known that I, CHARLES A. HARVEY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Open-Air Gas-Burners, of which the following is a specification.

This invention refers to gas-burners, and relates particularly to certain improvements in the formand arrangement of the parts of such a burner whereby a perfect mixture of gas and air-is obtained in the open air and after the gas has been discharged from the burner. I

.The advantage resulting from the use of this burner is that a perfectly combustible mixture is produced, giving a much greater degree of heat than in the useof the ordinary burner.

In the accompanying drawings, Figure 1 is a longitudinal central section through a burner embodying the features of my invention, showing in outline the flame produced by the burner. Fig. 2 is a front end View of such burner. Fig. 3 shows a modified form for producing a low-pressure or torch flame.

In the production of a burner embodying this invention I provide a body portion 1, having a globular inlet-chamber 2 and a cylindrical throat 3, somewhat less in diameter than the chamber 2 which throat is provided upon its inner peripheral walls with the deflecting-ribs 4. The lower side of the chamber 2 is provided with an opening 5 ,interiorly screw-threaded for receiving a gas-supply ipe 6, and the lower end of this supply-pipe has a bushing 7 of ordinary form for connecting the burner with a gas-supply system. (Not shown.)

A11 obstructing-pin 8 extends transversely through the body portion 1 of the burner, in this instance at a point near the opening between the inlet-chamber and the throat. This pin may be inserted within suitable coinciding openings formed in opposite sides of said body portion. The length and shape of the flame that will be produced by this burner is governed in a large degree by the position and size of this obstructing-pin relative to the open upper end of the supply-pipe 6.

' Attheir upper ends the walls of the throat 3 are provided with a square shoulder 9 which in the present instance is extended in an annular flange. This shoulder is useful in restricting the size of the neck of the flame, which it does by inducing air-currents (see arrows a) substantially at right angles with the current of gas issuing from the throatway 3. I

The stream of gas fed to the burner through the supply pipe 6 impinges upon the ob structing-pin 8 and is thrown outward within the inlet. chamber 2. Passing from the chamber 2 into the throatway 3 the currents of gas are thrown against the annular ribs 4, which further obstruct its free passage, deflecting it inwardly within said throatway. Pressure from the supply-pipe 6 forces the gas outward, however, through the open upper end of the throatway 3, and upon issuing from the burner it is joined by the transverse induced currents of air, (indicated by the arrows (2,) restricting the current of gas and forming the neck I) of theflame c. When the gas has been projected by the pressure within the supply-pipe 6 a certain distance from the throatway 3, it forms a mixture with said air-currents, burning in the flame c. The neck I) of the flame is colorless,while the body is wholly blue.

The form of burner just described produces a high pressure or blowpipe flame. Should a low-pressure, torch, or soft flame be desired, it may be produced by providing the body portion 1 with a softening-chamber 10, formed integral with or attached in any suitable manner to said body portion, which softening-chamber opens directly into the chamber 2. The supply-pipe 6 is fitted into an opening 11 in the lower end wall of the softening-chamber. The gas issuing from the throatway 3 of the form of burner just described burns in a soft torch-light flame, the pressure of the gas being taken up in the softening-chamber 10, in the chamber 2, and by the obstructing-pin 8 and annular ribs 4.

My invention is not restricted to the precise construction and arrangement shown and described herein, as said construction and arrangement may be modified or varied by those skilled in the art Without departing from the spirit and scope of my invention.

I claim as my invention 1. In a gas-burner, in combination, a body portion having a gas-inlet opening, a throat- Way, and a chamber intermediate said gasinlet opening and throatway; means in said chamber for breaking up the current of gas entering said chamber; and deflecting-ribs formed in said throatWay.

2. In a gas-burner, in combination, a body portion having a as-inlet opening, a throat- Way, and a chain er intermediate said gasinlet opening and throatway; deflecting-ribs formed in said throatway; and an obstructing-pin in said chamber.

3. In a gasburner, in combination, a body portion having a gas-inlet opening, a throat- Way, and a chamber intermediate said gasinlet opening and throatway; deflecting-ribs formed in said throatway; an obstructing pin in said chamber; and a flange extending about the open upper end of the throatway.

4. In a gas-burner, in combination, a body portion having a gas-inlet opening, a cylindrical throatway, and a globular chamber intermediate said gas-inlet opening and throat- Way; deflecting-ribs formed upon the inner periphery of said throatway; an obstructingpin extending through said chamber; and an annular flange about the open. upper end 01 the throatway.

CHAS. A. HARVEY. Witnesses BENJ. S. AYARS, Jr., R. E. AYARS. 

